Agnes was a hermit nun... And as mad as a hatter. Made it her business to undo curses.
Agnes was a rogue Spanish nun and hermit witch who was obsessed with undoing curses. 700 years ago Agnes would lock herself away after having visions of darkness, after decades in exile she would produce the Book of the Damned, a book made from her own flesh and blood capable of undoing any type of curse. Soon after the books completion, the Catholic church hierarchy burned her alive at the stake for heresy.